An Algorithm for Beam Propagation Method in Matrix Form

作者：Hsiao Chin Sung^*; Wang Likarn; Chiang Y J

来源：IEEE Journal of Quantum Electronics, 2010, 46(3): 332-339.

DOI：10.1109/JQE.2009.2029066

• Dispersion
• finite-difference method
• Fourier cosine beam propagation method
• matrix equation
• quasi-TE wave
• scalar wave
• waveguide effect

A new and efficient method for waveguide field calculation is proposed. In the proposed Fourier cosine beam propagation method, both dispersion and waveguide effects for each propagation interval are treated in a matrix form. Such a calculation method converts the conventional point-by-point analysis skill into a matrix-based one. By using the matrix method, the computing time required for calculating the field evolution is much less than that required by using the commonly used finite-difference beam propagation method. Two y-branches with, respectively, a rib-type and a channel-type cross sections are tested. The numerical results demonstrate the efficiency of the proposed method.

• 出版日期2010-3
• 单位清华大学